Optical Adjustment - Panasonic DVD-LS91EE Service Manual

DVD-LS91EE / DVD-LS91GN / DVD-LS91GCS

11.4. Optical adjustment

11.4.1. Optical pick gate adjustment
Measurement point
-----
Measuring apparatus
None (Use the service indication on the main unit)
Remove the solder shorts before trying to make the adjustment.
11.4.1.1. Preparations
1. Connect the main P.C.B. to the traverse ass'y with the extension cable.
2. Install the traverse ass'y to the tilt adjustment jig with three screws and three washers.
Caution
Remove the rubber cushion of the traverse ass'y.
3. Install the traverse ass'y to the disc.
Caution
Make sure the disc is installed on the disc motor securely.
4. Disassemble the Main P.C.B., Operation P.C.B., Inverter P.C.B. and LCD panel as shown in figure below.
5. The disc cannot be played back with the Disc cover attached. Press and hold down the S5201 and S5202 (Secure with cellulose
tape)
Adjustment point
Tangential adjustment screw
(Adjustment screw A)
Radial tilt adjustment screw
(Adjustment screw B)
34
Mode
Tracking servo "ON"
Tracking servo "ON"
Adjustment value
Adjust the jitter value to the minimum level.
Disc
DVDT-S01/S15AS